341010http://www.paleoportal.org/media/boilerplate/0/49959_state_x_period_map_34_image.jpghttp://www.paleoportal.org/media/boilerplate/0/64171_state_x_period_alt_map_34_image.jpgThe western edge of North America during the Triassic would have been somewhere around the California-Nevada border. Although still in the tropics, the climate of western North America was becoming more arid as rising mountains blocked moisture-bearing winds coming from the seas. Shales, sandstones, conglomerates, dolostones, and limestones were deposited in the shallow-to-deep marine environments off the coast. Exposures in Northern California (Shasta and Plumas Counties) have yielded a diverse marine fauna, including fossils of ammonites, brachiopods, bivalves, echinoderms, and marine reptiles.<i>Avicula mucronata</i>, <i>Owenites koeni</i>, <i>Sagenites</i>, <i>Shastasaurus pacificus</i>: Sarah Rieboldt, &#169; University of California Museum of Paleontology, 2003http://www.paleoportal.org/media/boilerplate/0/39939_state_x_period_slide_image1_34_image.jpghttp://www.paleoportal.org/media/boilerplate/0/91764_state_x_period_slide_image2_34_image.jpghttp://www.paleoportal.org/media/boilerplate/0/90518_state_x_period_slide_image3_34_image.jpghttp://www.paleoportal.org/media/boilerplate/0/11243_state_x_period_slide_image4_34_image.jpghttp://www.paleoportal.org/media/boilerplate/0/48977_state_x_period_slide_caption1_34_image.gifhttp://www.paleoportal.org/media/boilerplate/0/97667_state_x_period_slide_caption2_34_image.gifhttp://www.paleoportal.org/media/boilerplate/0/97799_state_x_period_slide_caption3_34_image.gifhttp://www.paleoportal.org/media/boilerplate/0/32835_state_x_period_slide_caption4_34_image.gifOctober 29, 2003 at 05:46:52July 21, 2006 at 10:29:03ResourcesCourses and Lectures23291http://jan.ucc.nau.edu/~rcb7/paleogeogwus.htmlPaleogeography of the Southwestern U.S.The paleogeography of the southwestern U.S. from 1.8 billion years ago to 10 million years ago. Text and images by Dr. Ron Blakey from Northern Arizona University.0ResourcesField Guides222436http://inyo.coffeecup.com/site/uw/unionwash.htmlAmmonoids At Union Wash, CaliforniaVisit a famous Early Triassic ammonite locality in the shadows of Mount Whitney; virtual field trip; many images of fossils; paleontology links, plus links to Inyo County.
0ResourcesImage Collections272449http://inyo.coffeecup.com/site/brachiopods/brachiopods.htmlSome Fossil BrachiopodsImages of several fossil brachiopods, dating in geologic age from early Cambrian to Pleistocene, with explanatory text.0ResourcesGeneral Reference382427http://inyo.coffeecup.com/site/dv/dvfossils.htmFossils In Death Valley National ParkThe paleontology, geology and natural wonders of Death Valley National Park (and more); many images of fossils; field trips; paleontology links, plus links to Death Valley.
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